NWW3 Wave Model Changes

2007

September 18, 2007

Operational implementation of the multigrid version of the
WAVEWATCH III® model. Changes to the model are documented in the
NOAA Technical Implementation Notice 07-51.
Major overhaul of the WAVEWATCH III® website to support the new model.

2006

August 21, 2006

Operational implementation of Great Lakes (GRL) waves model.

August 1, 2006

Adding buoy 44027 to WNA and NAH models.

July 25, 2006

Added points MFR51 through MFR63 to ENP and NPH models (ftp site only).

June 30, 2006

Experimental Great Lakes Waves web site opened to the public.

May 30, 2006

Capping the drag coeffcient to 0.0025 for more realistic stresses and wave
growth in extreme wind conditions. This impacts wave growth in Hurricane
conditions only.

Going to running the model four times per day (00z, 06z, 12z and 18z
cycles). Hindcasts in text products and maps now only go back 6 hours previous
to hindcast. GRIB output interval remains at 3 hours.

Changed some island output points in Pacific. These points were all centered
at non-resolved islands. Because these islands are now treated at a sub-grid
level, some output points need to be moved, if the obstruction at the
surrounding grid points is notable. These changes are considered to be
temporarily, and final changes to the output points will be addressed after
further discussion with the regional WFOs.

GUAM: Moved to 143.75°E 12.00°N

SAIPAN: Moved to 147.50°E 16.00°N

PALAU: Moved to 136.25°E 9.00°N

CHUUK: Moved to 152.50°E 8.00°N

POHNPEI: Moved to 157.50°E 7.00°N

MAJURO: Moved to 171.25°E 8.00°N

ENEWETAK: Moved to 163.75°E 13.00°N

PAGO_PAGO: Moved to 168.75°W 15.00°S

June 26, 2002

Start of display of the model results with the WAVEWATCH III version 2.22 on
the experimental page.